1. RINSE AID DISPENSER
Rinse aid is just as important as detergent because it helps your dishes shed water and therefore dry quicker. Make sure your rinse aid dispenser is full and the cap is fitted and functioning properly.
2. HEATING ELEMENT
Most dishwashers use hot water to kill bacteria and properly sanitize your dishes. Since the water going into the appliance isn't hot enough, the heating element (a thin, circular tube at the bottom of the tub) will heat up the water so it reaches the optimal temperature for killing germs. The heating element is also integral to faster drying time because heat encourages moisture to evaporate.
If the element isn't working properly, not only will your dishes not come out as clean as they could, they'll also come out wet. If you suspect the heating element is faulty, consider having it inspected by a trained professional.
3. VENT
Your dishwasher’s vent releases hot air during the drying cycle. If the vent isn’t opening properly, steam can’t escape and your dishes will still be wet. Inspect the vent and clean off any debris that may be restricting airflow. If the vent isn’t opening at all, it will need to be repaired or replaced.
4. HIGH LIMIT THERMOSAT
The high limit thermostat functions as a safety device that prevents the dishwasher from getting too hot. If it is malfunctioning, it might be shutting off the heat before your dishes are finished drying. Keeping the thermostat in working order is important, not only for appliance efficiency, but also safety reasons.